Crystal Structure of a Lantern-type Dirhodium(II) Complex with Axial Pyridine Molecules <i>cis</i>-[Rh<sub>2</sub>(4-Me-pf )<sub>2</sub>(O<sub>2</sub>CCMe<sub>3</sub>)<sub>2</sub>(py)<sub>2</sub>], 4-Me-pf<sup>−</sup> = <i>N,N</i>′-Di-<i>p</i>-tolylformamidinate Anion

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  • HANDA Makoto
    Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University
  • KANO Makoto
    Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University
  • YANO Natsumi
    Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University
  • MIKURIYA Masahiro
    Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University
  • KATAOKA Yusuke
    Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University

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<p>The title compound of a lantern-type rhodium(II) dinuclear complex, cis-[Rh2II(4-Me-pf )2(O2CCMe3)2(py)2] (4-Me-pf− = N,N′-di-p-tolylformamidinate anion; py = pyridine), was isolated and the crystal structure was determined by the single-crystal X-ray diffraction method at 150 K. It crystallizes in the monoclinc space group P21/c with a = 17.4169(2)Å, b = 12.7032(2)Å, c = 21.4293(3)Å, β = 92.311(1)°, V = 4737.38(11)Å3, Dx = 1.420 g/cm3, and Z = 4. The R1 [I > 2σ(I)] and wR2 (all data) values are 0.0245 and 0.0664, respectively, for all 7864 independent reflections. Two RhII atoms are bridged by two 4-Me-pf− and two pivalato ligands in the cis-(2:2) fashion. The axial sites of the dinuclear core are occupied by py ligands with distances of Rh-Nax = 2.2816(18) and 2.3458(19)Å. The Rh–Rh distance is 2.4630(2)Å, of which value is in the range of those for the other lantern-type dirhodium complexes with formamidinato ligands.</p>

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